Abstract: A device for forming a sheet-metal blank, the device including: a press frame; a tool top part including an outer die and an inner die; a tool base part including a punch and a sheet-metal holder; at least one drive assigned to the tool top part and/or the tool base part; and an annular sheet-metal holder surrounding the punch and having a support face; wherein one drive is in each case assigned to the inner die on the one hand, and to the outer die and the sheet metal holder on the other hand, and the one drive displaces the inner die and the outer die at different speeds in the drawing direction. A method of forming a sheet-metal blank including: using the device during a starting period, an intermediate phase, and a final phase where the movement and/or direction of the two dies vary.

Abstract: Some embodiments of the disclosure provide methods and systems for controlling dimensions of metal hydroformed parts. According to an embodiment, a control method includes: obtaining an inner cavity volume of a target part and an inner cavity volume of a tube blank; injecting a liquid into the tube blank under a high pressure condition; determining a liquid volume compression compensation quantity according to the inner cavity volume of the target part; determining a liquid volume increment-target part corner radius relationship according to the inner cavity volume of the target part, the inner cavity volume of the tube blank, and the liquid volume compression compensation quantity; determining a liquid volume increment according to the liquid volume increment-target part corner radius relationship; and controlling dimensions of a metal hydroformed part according to the liquid volume increment.

Abstract: A method and system of monitoring crimp quality of a crimp terminal in a hydraulic crimping apparatus. The method includes: determining a pressure of a hydraulic fluid supplied to a hydraulic crimping head of the hydraulic crimping apparatus; determining a flow of the hydraulic fluid supplied to the hydraulic crimping head of the hydraulic crimping apparatus; and analyzing the pressure and the flow of the hydraulic fluid to determine if a crimp is defective or not defective.

Abstract: A high pressure tool assembly includes a tool and a hand control valve connected to the tool. A hydraulic manifold is fluidly connected to the hand control valve. An intensifier is fluidly connected to the hydraulic manifold and to the tool. The intensifier increases the pressure of a first operating fluid supplied to the tool. A first fluid circuit is formed between the hand control valve, the hydraulic manifold and the intensifier. The first fluid circuit operates at a first pressure. A second fluid circuit is formed between the intensifier and the tool and operates at a second pressure. The second pressure is larger than the first pressure. The second fluid circuit is isolated from the first fluid circuit.

Abstract: A die (13, 213, 313) is supported in a die holder (381) such as a frame or an adapter (18, 518) supported in a frame such that it is operational use in a material deforming operation. One or both of the die and the die holder have at least one gas passage which is substantially closed by at least part of the die. Gas such as pressurized air is directed into an end of the gas passage opposite the die via a hose (42, 542) connected to a gas source. If the die is broken or loose leak paths are available for the escape of gas past the die to or from atmosphere. A pressure sensor (41) connected to the hose detects the change in pressure of the gas and the magnitude of that pressure is used to determine the die condition. Alternatively a flow rate sensor is used to detect a change in the flow rate of the gas in order to determine the condition of the die.

Abstract: Provided is a workpiece punch-molding method and a workpiece punch-molding device capable of maintaining the thickness of a workpiece at a constant precision. Prior to the punch of a workpiece by a mold punch and a counter punch, the data denoting a relationship between a punch speed of the mold punch and a delay time of the depressurization of the counter punch is obtained. The counter punch is subjected to the depressurization at an early timing based on the obtained data.

Abstract: The cylinder/piston unit for a counterforce ram or vee ring of a fineblanking or stamping press equipped with at least one tool is continuously maintained at a preadjustable cushion pressure (P1) and is then subjected to a preadjustable displacement pressure (P2) from a connectable high-pressure source, with said pressure being set to a pressure (PU) varying between the cushion pressure (P1) and the pressure for forming or blanking by supplying a separate control oil quantity to a second accumulator via a central control unit, whereby a rise in pressure caused by the impact between the tool and the workpiece is regulated, independently of quantity of the control oil, from the pressure (P3) in the second accumulator to a permissible set pressure by discharging a significant part of the pressure pulse into a separate tank and the available cushion pressure allows ejection of the workpiece to be synchronized with retraction of the press ram.

Abstract: A method monitoring crimping of a fitting onto a hose, or the like, includes monitoring fluid pressure for carrying out the crimp at discrete diameters of the crimp, during the crimp, and analyzing crimp data reflecting the fluid pressure with respect to the diameters of the crimp during the crimp to determine if the fluid pressure is above a minimum pressure at particular diameters during the crimp, below a maximum pressure during the particular diameters during the crimp, and/or varies significantly from earlier crimps, to determine if the crimp is acceptable. A system for monitoring crimping of a fitting onto a hose end or the like might include a pressure sensor deployed in conjunction with a crimper to measure fluid pressure employed by the crimper during the crimp, a die diameter monitor and, a controller operatively connected to the crimper and sensors.

Abstract: The invention relates to a method for adjusting the position of a mandrel (10), which is situated in a hydraulic punch consisting of a cylinder and a ram that form a mandrel cylinder (8), in an extrusion press for producing pipes (2), which are extruded from blocks (4) that are loaded into a receiving device (5) situated upstream of the extrusion press (3) and are punched using the mandrel (10). The invention is characterised in that the mandrel cylinder (8) is driven directly by pumps (11), which are set for a pre-calculated throughput that is dependent on the press speed, and that an additional throughput is added to the pre-calculated pump throughput. To adjust the position of the mandrel (10), a control valve (16) that acts on the ring side (12) of the mandrel (8) is connected to a tank (17).

Abstract: A method monitoring crimping of a fitting onto a hose, or the like, includes monitoring fluid pressure for carrying out the crimp at discrete diameters of the crimp, during the crimp, and analyzing crimp data reflecting the fluid pressure with respect to the diameters of the crimp during the crimp to determine if the fluid pressure is above a minimum pressure at particular diameters during the crimp, below a maximum pressure during the particular diameters during the crimp, and/or varies significantly from earlier crimps, to determine if the crimp is acceptable. A system for monitoring crimping of a fitting onto a hose end or the like might include a pressure sensor deployed in conjunction with a crimper to measure fluid pressure employed by the crimper during the crimp, a die diameter monitor and, a controller operatively connected to the crimper and sensors.

Abstract: The method has a first material of lesser hardness acting as a rod-shaped carrier for a second material of greater hardness, each materials formed within a respective extrusion press tool and the plastic mass flow of the greater hardness material fed to the extrusion press tool for the lesser hardness material for providing a common plastic mass flow in the form of a rod-shaped body with a core and an outer region. An Independent claim for a device for manufacture of a hard metal workpiece is also included.

Abstract: The present invention is generally directed towards a catalytic converter installed in the motor vehicles. More specifically to a method of measuring the pressure on the substrate as the catalytic converter is subject to the spin forming process. A pressure-measuring device such as a sensor is contact with the substrate. In order to transfer data from the rotating catalytic converter to a stationary object, a slip ring device is connected to the pressure-measuring sensor.

Abstract: A crimping tool comprises a crimping operation information detect unit for detecting information concerning a crimping operation; a display unit for displaying quantity information; and, a display control unit for allowing the display unit to display the quantity information in accordance with the information detected by the crimping operation information detect unit. A crimping tool comprises a crimping operation information detect unit for detecting information concerning a crimping operation; and, a pressure judge unit for judging, in accordance with information detected by the crimping operation information detect unit, whether pressure is normal or abnormal.

Abstract: A ram (5U) is descended by a self-weight pressure of a rod-side cylinder chamber (19) of a hydraulic cylinder (13R) which vertically moves the ram (5U) is detected by oil pressure detection means (21), and a determination section (65) detects a position at which a punch (P) attached to the ram (5U) contacts with an upper surface of a workpiece (W), from a change of this detected pressure. If the upper surface of the workpiece (W) is detected, a plate thickness calculation section (67) calculates a plate thickness of the workpiece (W) based on an upper surface position of a die (D) known in advance and stored in a memory (63).

Abstract: This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of the ram relative to a stationary part of the press. A moveable plate moves relative to a base plate. A resilient pneumatic bellows has one end sealingly mounted on the moveable plate. The resilient pneumatic bellows has an opposite end sealingly mounted on the base plate. A vessel is connected on one of the plates. A metering cylinder is mounted on the same plate as the vessel and is positioned within the vessel. A piston assembly is mounted in the metering cylinder. A piston rod has one end connected to the piston assembly and the opposite end connected to the other of the plates.

Abstract: This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of the ram relative to a stationary part of the press. A moveable plate moves relative to a base plate. A resilient pneumatic bellows has one end sealingly mounted on the moveable plate. The resilient pneumatic bellows has an opposite end sealingly mounted on the base plate. A vessel is connected on one of the plates. A metering cylinder is mounted on the same plate as the vessel and is positioned within the vessel. A piston assembly is mounted in the metering cylinder. A piston rod has one end connected to the piston assembly and the opposite end connected to the other of the plates.

Abstract: A hydraulic pressure control apparatus comprises a high pressure accumulator for sucking pressure oil supplied to a relief chamber of a relief valve to make changeover for the relief valve from a valve-closed state to a valve-open state when a forming load is applied to the pressure oil charged in a pressure chamber and the hydraulic pressure of the pressure oil arrives at a relief preset pressure, and a low pressure accumulator for sucking the pressure oil charged in the pressure chamber via the relief valve which is in the valve-open state.